I am new to maven with eclipse. I am using m2e plugin(version 1.2.0).
i have imported maven project, it is showing build path errors due to some jars are missing.
How to add those jars to the build path. Do i need to download manually and add to the eclipse build.
i am learning about pom.xml, please help me.
you should add dependency of missing jar into pom.xml file.
As soon as you add them , eclipse will automatically download those jar files for you.
You can easily find maven dependencies on google.
Related
Can any one explain how to add Maven dependency JAR i.e. build path libraries? To be very specific how to include JAR file mentioned in pom.xml to Java build path? Maven dependencies - unable to see jars over here.
Don't have a option to update Maven dependencies. Also executed the script mvn eclipse:eclipse, seen on StackOverflow.
Generally, you should not have any need to deal with such a task manually. Here is the correct procedure for importing of maven project to your Eclipse IDE:
Make sure you have m2eclipse plugin installed (Maven support for Eclipse). As far I remember it is included to Eclipse IDE for JEE developers by default.
Checkout your maven project to any directory
From this directory (root pom.xml is located in), run: mvn eclipse:eclipse
Go to Eclipse, File -> Import, select "Existing maven project"
Select directory where your root pom.xml is located, Eclipse should find all maven modules.
Optional: if eclipse will tell you that it can't recognize some maven plugins - ignore this, just continue.
If you follow this instruction, IDE will create all maven modules as eclipse projects and you will have an option to update maven dependencies and also willsee all of them rigth in IDE.
I have added maven dependency folder in my build path in eclipse but it's showing some jar files are missing whereas they are still there when i browse them from nautilus. i am using ubuntu 12.04
I have added maven dependency folder in my build path
You do not add the dependency folder yourself. If you have installed m2e, maven will automatically download dependencies and add them to your classpath.
but it's showing some jar files are missing
Does it really say "file-version.jar is missing" or like "Class not found"?
when i browse them from nautilus
So, did you put .jar-files somewhere in your file system manually? If so, you need to use
<dependency>
...
<scope>system</scope>
<systemPath>../path/to/dependency.jar</systemPath>
</dependency>
But it is generally recommended not to use system-scoped dependencies. Let maven download them, or install your own dependencies locally by using the install target.
Also, make sure you refresh your project. If you have m2e installed, press [alt]+[F5] or right-click on your project and selecet maven -> update project. This will re-download all needed dependencies and plugins which are specified in your pom.xml.
Will all the jars used by the project added automatically to build path of project in eclipse by adding the maven plugin to eclipse(m2eclipse)? If not added automatically what should be done to get the jars into build path?
Will all the jars used by the project added automatically to build
path of project in eclipse by adding the maven plugin to
eclipse(m2eclipse)?
All the JARs that you define as dependencies in pom.xml will be added automatically to the Eclipse build path.
If your project is set up as a Maven project in Eclipse, then yes. Also this assumes that your settings.xml file and pom.xml are correct.
If it is an exsisting non-maven project, you will need to use the context menus to convert it into a maven project before the dependencies are added.
I didn't really use maven so it may be noob question.
I have Eclipse plugin project and before I deploy it, I need to generate a pom file. The regular pom file is designed for java projects and if I try to generate from them I lose my plugin dependencies. Is there a way for maven to include them,too ?
Converting a standard Eclipse plugin project to a Maven structured project is not as simple as generating a pom file. The project needs to be in the same directory structure that Maven expects.
If you want to build Eclipse plugins as Maven projects take a look at Tycho (http://www.eclipse.org/tycho/).
I've installed elcipse 3.6.2 and m2e plugin
M2E - Maven Integration for Eclipse (Incubation) 0.13.0.201105261543 org.eclipse.m2e.feature.feature.group.
I have imported an existing maven pom project. I right clicked on the project then went to
Debug As > Maven Install.
It downloads most of the things but leaves out a lot of jar even though it's corresponding .pom and .sha2 are downloaded. So it leaves me with error messages like missing .jar.
So i had to download it manually from the ibiblio site.
Is there something wrong with my configuration?
BTW, the imported projects are from jetty 8.0.3M.
I don't think their pom needs changing.
I suppose it's in the eclipse/m2e plugin config?
This has worked for me almost always:
Delete your .pom and .sha2 files for the jar that is missing.
From Eclipse run the menu command "Update All Maven Dependencies" under Project.
This seems to download what is missing.
Hope that helps.